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How to find OpenStack version?

1. Login to OpenStack controll node (Keystone Server) 2. Run following commands     keystone-manage  --version     nova-manage  --version 3. If version you got from step 2 are 2013.2.x, then you are runing Havana release    If version you got from step 2 are 2014.1.x, then you are runing IceHouse release For more infroamtion on OpenStack release, plrease check  https://wiki.openstack.org/wiki/Releases # keystone-manage  --version 2014.1.5 # nova-manage  --version 2014.1.5                                                                      OR Using the  nova-common  package  # rpm -qi openstack-nova-common Name        : openstack-nova-common        Relocations: (not relocatable) Version     : 2014.1.5                          Vendor: Fedora Project COPR (jruzicka/rdo-icehouse-epel-6) Release     : 1.el6                         Build Date: Wed 01 Jul 2015 08:54:17 PM IST Install Date: Fri 20 May 2016 05:02:21 PM IST      Build Host: co
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Connect Cassandra using DBeaver

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DBearver: Download enterpriese DBearver .its free (dbeaver-ee-3.7.4-x86_64-setup) http://dbeaver.jkiss.org/download/enterprise/ cassandra-jdbc-driver: http://www.dbschema.com/cassandra-jdbc-driver.html Step-1: Select Database->Driver Manager Step-2:Select New Step-3: Driver Information : Driver Name:                  User Friendly Name Driver Type:                    Generic Java Driver Class:           com.dbschema.CassandraJdbcDriver URL:                                    jdbc:cassandra://{host}[:{port}]/{database} Required File(s):            cassandra-driver.jar Default Port:                   9042 Library File:                      cassandrajdbc1.1 Step-4: Get the class jar file cassandrajdbc1.1 Step-5: select Find Class Step-6: Apply Ok Step-7: New Database connection Step-8: Select Database Type Step-9: Put the database connection information Step-10: put the ssh tunnel information
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Virtualization and Cloud Computing

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What is virtualization? In a nutshell, virtualization is software that separates physical infrastructures to create various dedicated resources. It is the fundamental technology that powers cloud computing. "Virtualization software makes it possible to run multiple operating systems and multiple applications on the same server at the same time," said Mike Adams , director of product marketing at VMware, a pioneer in virtualization and cloud software and services. "It enables businesses to reduce IT costs while increasing the efficiency, utilization and flexibility of their existing computer hardware." The technology behind virtualization is known as a virtual machine monitor (VMM) or virtual manager, which separates compute environments from the actual physical infrastructure. Virtualization makes servers, workstations, storage and other systems independent of the physical hardware layer , said John Livesay, vice president of InfraNet , a network infrast
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